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A kind of exhaust gas purification device and process of coal pulping system

A waste gas purification device and waste gas purification technology, which are applied in air quality improvement, chemical instruments and methods, separation methods, etc., can solve the problems of large floor space and long process flow, reduce the generation of waste liquid and improve the absorption efficiency. , The effect of stable processing efficiency

Active Publication Date: 2022-07-12
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this solution can better guarantee the effect of exhaust gas purification treatment, it also has problems such as large footprint and long process flow.

Method used

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  • A kind of exhaust gas purification device and process of coal pulping system
  • A kind of exhaust gas purification device and process of coal pulping system
  • A kind of exhaust gas purification device and process of coal pulping system

Examples

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Comparison scheme
Effect test

Embodiment 1

[0057] like figure 1 As shown, the exhaust gas purification tower 1 of this embodiment includes a tower body with an air inlet 2 at the bottom of the tower body, an air outlet 3 and a wire mesh demister 4 at the top, a fresh absorption liquid inlet 5 and a trough distributor 18 . The tower body is provided with two packing support screen plates 6, the packing support screen plate 6 is placed with filler to form a packing layer, and a nozzle (circulating liquid spray nozzle is provided between the fresh absorption liquid absorption section and the circulating liquid absorption section. device) 8; in the circulating absorption section, a plurality of gas-liquid flow uniform distribution devices 7 are arranged between the circulating liquid spray nozzle device (nozzle 8) and the exhaust gas inlet (air inlet 2); the nozzle 8 passes through the acid and alkali resistant pipeline 9 and the circulating water pump 12 are connected with the circulating water discharge port (the second ...

Embodiment 2

[0065] like figure 1 As shown, the exhaust gas purification tower 1 of this embodiment includes a tower body, an air inlet 2 is arranged at the bottom of the tower body, an air outlet 3 and a wire mesh demister 4 are arranged at the top, a fresh absorption liquid inlet 5, and a trough distributor 18. There are two packing support screen plates 6 inside the tower body, and packing is placed on the packing support screen plate 6 to form a packing layer; a high-efficiency conical nozzle (circulating liquid nozzle) 8 is arranged between the packing layers, and the conical nozzle 8 passes through the resistance. The acid-base pipeline 9 and the circulating water pump 12 are connected with the liquid in the tower kettle (the filler is not shown in the figure).

[0066] The exhaust gas purification tower is provided with a centrifugal pumping negative machine 11, which adjusts the frequency conversion to achieve energy saving while ensuring the negative pumping effect. A circulating...

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Abstract

The invention provides a waste gas purification device and a process for a coal pulping system. The exhaust gas purification tower of this treatment system has excellent purification and treatment capacity, and the treated exhaust gas of the coal pulping system can meet the tail gas emission standard, which can significantly reduce the amount of waste water generated. The process of the invention includes: firstly collecting the waste gas through a centrifugal negative pump, then the waste gas enters the purification tower, and fully contacts the circulating liquid sprayed by the high-efficiency conical nozzle on the gas-liquid flow distributor, and the fresh liquid of the trough-type water distributor carries out Secondary absorption treatment. The absorbed exhaust gas is directly discharged to meet the emission standard. Part of the tower kettle circulating liquid is discharged to the wastewater treatment process, and part of the tower kettle circulating liquid is returned to the interior of the purification tower after heat exchange. The invention also provides an absorbing liquid used in the absorbing liquid, which has the characteristics of high efficiency, multi-function, low cost and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical waste gas treatment, and relates to a waste gas purification device and a process for a coal pulping system. Background technique [0002] Coal Water Slurry (CWM) is a clean coal-based fluid fuel prepared by coal slurry process from about 63wt% of raw coal with different particle size distribution, 36wt% of water and about 1wt% of additives. The coal-water slurry gasification technology turns solid coal fuel into fluid coal fuel, which makes it have the characteristics of liquid combustion application similar to heavy oil, which greatly promotes the clean utilization of coal, not only can achieve better environmental benefits, but also It can also achieve considerable oil-replacing economic benefits and energy-saving benefits. [0003] However, in the coal gasification industry, the industrial chain wastewater is generally difficult to treat. For this reason, the coal pulping system also assumes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/72B01D53/58B01D53/54
CPCB01D53/78B01D53/58B01D53/72B01D53/54B01D2251/60Y02P70/10
Inventor 楼家伟孙路滨胡耀峰王阳郝成浩张宏科孙得浩何晓方姜良建
Owner WANHUA CHEM GRP CO LTD
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